What to check on the label
- Read the exact form, such as glycinate, citrate or oxide
- Find elemental magnesium per labelled serving
- Check capsules per serving, other ingredients and storage
Common formats
Glycinate or bisglycinate
Check whether the formula includes other magnesium compounds
Citrate
Compare the elemental amount and the number of servings
Oxide
Price alone does not establish suitability
Compare on the same basis
Add product price, delivery and applicable costs, then divide by labelled servings. The result compares cost, not effectiveness or a suitable dose.
Sources and checks
Checked on 2 November 2026
